Tape guide mechanism for quotation projectors



Jam... 28, g., A, D, En-ZEN v v 2,028,767

TAPE GUIDE MECHANISM FO QUOTATION PROJECTORS Original Filed Jan. 9, 1930 2 Sheets-Sheet l Jan. Z8, 21936.

A. D. EITZEN TAPE GUIDE MECHANISM FOR QUOTATION PROJECTORS original Filed Jan. sa, 1930 2 Sheets-Sheet 2 n ATTORNEY Patented Jan. 28, 1,936

UNITED STATES PATENT OFFICE TAPE GUIDE MECHANISM FOR QUOTATION PROJECTORS Application January 9, 1930, Serial No. 419,589 Renewed October 28, 1933 17 Claims.

My invention relates to tape guiding means for use in stock quotation projectors, or similar apparatus, and especially to guiding means of the tape reversing type, to be used in a projector having two projection apertures for simultaneous projection of two images of the tape on different screens, and designed to prevent sticking of the tape on the guide and other disadvantages of tape guides, or reversing guides, as heretofore proposed or used.

I-Ieretofore the tape has been run in parallel stretches, moving in opposite directions through or over the two projector apertures, and intermediate the two stretches has been passed about a substantially V-shaped guide, in direct contact with the guide surfaces; and great difficulty has been experienced in the tendency of the tape to stick to the guide surfaces, or to slip laterally thereon, and in general the reversal of the tape by such guides has been unsatisfactory, as understood by skilled persons. Especially in the case of cellophane tape, which is easily affected by heat `and moisture, the tape will frequently stick to the guide surfaces, even if rollers are employed as the active guiding elements, and in fact when the ticker stops the tape will often stick tight to the guides and may be stretched or broken or will have a jerky motion under the action of the tape puller, which interferes with the ticker mechanism, etc., as also well understood by persons versed in the art.

To overcome these disadvantages, and secure a smooth and true guiding action without sticking of the tape, I provide a band or belt of suitable material, such as woven fabric, which runs over the guide and under the tape, so that the tape does not come in contact with the guide surfaces. The moving tape support or belt runs freely over the guide surfaces, without sticking, and is of such material or character that the tape does not stick to it.

The characteristics and advantages of the invention are further sufficiently explained in connection with the following detail Vdescription of the accompanying drawings, which shows one representative embodiment. After considering this example, skilled persons will understand that many variations may be made without departing from the principles disclosed and I contemplate the employment of any structures that are Iproperly within the scope of the appended claims.

Fig. 1 is an elevation of projection apparatus of a type or arrangement suitable for incorporation of the improved guide, as shown, embodying the invention in one form.

Fig. 2 is a top plan of a portion of the projector, showing the projection apertures, tape and guide.

Fig. 3 is a diagram showing one projector and mirror arrangement suitable for this type of apparatus.

Fig. 4 is a side elevation of the guide and band or belt.

Fig. 5 is a top plan.

Fig. 6 is an elevation, from the right of Fig. 4.

Fig. 1 shows more or less diagrammatically the ticker l, projector 2, tape puller 3 for pulling the tape through the projector, tape 4, the tape loop at 5, between the ticker and projector, and an element such as a roll 6 running on the loop to control the puller. The projector has two projection apertures 'l and 8, Fig. 2, and one stretch of the tape 9 moves in the direction of the arrow from the ticker and loop over aperture l, is reversed by a guide at I0, and the other active stretch l l of the tape then passes over the aperture 8, and over a guide l2 to the puller.

Fig. 3 shows one suitable arrangement of projecting lenses i3 and mirrors i4, I5, I6 and I6EL for properly projecting the images of the distinct strip portions on two screens.

As heretofore proposed or used, the reversing guide such as l0 has been a simple metal plate or shoe and the tape has been run over it in direct contact with the metal surfaces, with the difficulties or disadvantages above referred to. To overcome these objectionable features and realize the definite advantages also sufciently above mentioned, I provide the improved guide structure or mechanism shown in detail in Figs. 4, 5, and 6, in which the principal or essential feature is a band or belt l1, with suitable means for guiding it in a continuous circuitous path over the guide proper. The tape overlies and runs upon the belt about the upper guide member or shoe l0, following the same course and having the same reversing action as when it runs directly on the guide; the intermediate belt is of such material and is so moved and supported that it runs freely and does not stick either to the guide or to the tape. The belt may be of any suitable material; in preferred cases it may be a band or tape of woven fabric, or a silk ribbon.

The main or upper guide member or shoe il) is of substantial thickness and has rounded edges I8 at a right angle to each other, and inward or rear edges l 9 in alignment, with their upper corners rounded as at 20. The edges I9 are at the iront of slots 2i, which accommodate vertical stretches of the band. The base or inward portion 22 of the upper guide is secured to a plate 23 which is in turn secured to the frame of the projector. A lower shoe or belt guide 25Y has an `upper or stem portion 26 connected to the base as overlying portions of the tape, as indicated by arrows in Fig. 5; lower portions of the bands pass about the lower guides 2,5 in a similar manner, and intermediate portions move respectively upward and downward over the rear face of the lower guide and through the slots 2|.

The tape is omitted in Figs. 4 to 6 for illustrative clearness, but it will be readily understood that it overlies the belt as it passes about the upper guide l0, is supported by the upperV portions of the belt, and drives the belt in its continuous course aboutV the upper and lower guides. Y In some-cases, on account of the direction of tape and belt movement, or the application of pulling force to tape stretch li, or if the guide edges 20 are improperly rounded, there is a tend- Vency for the tape or the portion of the belt passing over the lower portion of the guide as viewed in Fig. 5, to run outward in the corresponding slot, which is designated Ela in Fig. 5; and I provide suitable means to prevent this displacement, such as the screw 30 engaging in threads formed in adjacent portions of the guide and base. The inner end of the screw closes the slot and prevents outward displacement of the band orrtape.

I claim:-

1. For purposes described, belt and tape guide means comprising a guide member having belt guiding surfaces arranged at an angle to each other, and additional belt guiding formations, a continuous tape supporting belt arranged to pass over said surfaces and formations and to support and direct a tape which passes about said surfaces super-posed upon the belt, Vand additional belt guiding means for movablysupporting and directing a portion of the belt remote from the first named guide member and the tape so that only the portion of the belt passing around said first mentioned guide member will be maintained in engagement with the tape.

2. For purposes described, belt and tape guide means comprising a guide member having belt guiding surfaces arranged at right angle to each other, and additional belt guiding formations, a continuous tape supporting belt arranged to pass over said surfaces and formations and to support and direct a tape which passes about said surfaces super-posed upon the belt, andad- `ditional belt guiding means for movably supporting and directing portion of the belt remote from the first named guide member and the tape so Ythat only the portion of the belt passing around said first mentioned guide member will be maintained in engagement with the tape.

3.k For purposes described, belt and tape guide means comprising a guide member having belt guiding surfaces arranged at an angle to each other. and additional belt guiding formations,

continuous tape supporting belt arranged to pass over said surfaces and formations and to support and direct a tape which passes about said surfaces super-posedy upon the belt, and additional belt guiding means for movably supporting and directing a portion of the belt remote from the rst named guide member and the tape so that only the portion of the belt passing around said first mentioned guide member will be maintained in engagement with the tape, said additional guiding means including a member having rounded belt guiding surfaces arranged at an angle to each other. Y

fl. For purposes described, belt and tape gui-le means comprising a guide member having belt guiding surfaces arranged at an angle 4to each other, and additional belt guiding formations, a continuous tape supporting belt arranged to pass over said surfaces and formations and to suppe-r and direct a tape which passes about said surf faces super-posed upon they belt, and additional belt guiding means for movably supporting and directing a portion of the belt remote from theY rst named guide member and the tape so that only the portion of the belt passing arounclsaid tions, a continuous tape supporting belt arranged to pass over said surfaces and formations and to support and directa tape which passes about said surfaces super-posed upon the belt, and additional belt guiding means for movably supporting and directing a'portion of the belt remote fromthe first named `guide member and the tape so that only the portion of the belt passing around said first mentioned guide member will be maintained in engagement with the tape, and means lfor supporting said additional guiding means adjustably in relation to the rst named gui-:ie mem-oer. i

Y 6. For purposes described, belt and tape guide means comprising a guide member having belt guiding surfaces arranged at an angle to each other, and additional belt guiding formations, a continuous tape supporting belt arranged to pass over said surfaces and formations and to support and direct a tape which passes about said surfaces super-posed upon the belt, additional belt guiding means for movably supporting andV directing a portion of the belt remote from the first named guide member and the tape so that.

only the portion of the belt passing around said first mentioned guide member will be maintained in engagement with the tape, said additional guiding i means including a member having rounded belt guiding surfaces arranged at an angle to each other, and means for supporting said additional guiding means adjustably in relation to the rst named guide member.

7. A belt and tape guide structure comprising ashoe having rounded'belt guide faces relatively arranged at anangle and other rearward belt Yguide faces, and another guide shoe arranged substantially perpendicularly to the first and having rounded belt guide faces arranged at an angle to each other. Y

8. A belt and tape guide structure comprising ashoe havingfrounded belt guide faces relatively Il I) arranged at an angle and other rearward belt guide faces, and another guide shoe arranged substantially perpendicularly at an angle to each other, the second shoe being supported adjustably in relation to the first, to regulate belt tension.

9. A belt and tape guide structure comprising a shoe having rounded belt guide faces relatively arranged at an angle and other rearward belt guide faces, another guide shoe arranged substantially perpendicularly to the rst and having rounded belt guide faces arranged at an angle to each other, and a continuous tape supporting and guide belt arranged to pass circuitously about the shoes and stated guide faces.

' 10. A belt and tape guide structure comprising a shoe having rounded belt guide faces relatively arranged at an angle and other rearward belt guide faces, another guide shoe arranged substantially perpendicularly to the rst and having rounded belt guide faces arranged at an angle to each other, the second shoe being supported adjustably in relation to the first, to regulate belt tension, and a continuous tape supporting and guide belt arranged to pass circuitously about the shoes and stated guide faces.

l1. A belt and tape guide structure comprising a shoe having rounded belt guide faces arranged at a right angle and other rearward belt guide faces, and another guide shoe arranged substantially perpendicularly to the first and having rounded belt guide faces arranged at a right angle to each other.

12. A belt and tape guide structure comprising a shoe having rounded belt guide faces arranged at a right angle and other rearward belt guide faces, and another guide shoe arranged substantially perpendicularly to the rst and having rounded belt guide faces arranged at a right angle to each other, the second shoe being supported adjustably in relation to the rst to regulate belt tension.

13. A belt and tape guide structure comprising a shoe having rounded belt guide faces arranged at a right angle and other rearward belt guide faces, another guide shoe arranged substantially perpendicularly to the rst and having rounded belt guide faces arranged at a right angle to each other, and a continuous tape supporting and guide belt arranged'to pass circuitously about the shoes and stated guide faces.

14. The structure defined in claim 1 with the addition that the belt consists of woven fabric.

15. The structure defined in claim 1 with the addition that the band consists of a silk strip.

16. For purposes described, belt and tape guide means comprising a guide member having belt guiding surfaces arranged at an angle to each other, a continuous tape supporting belt arranged to pass over both said surfaces to support and direct a tape which passes about said surfaces superposed upon the belt to move in three or more different plane paths of movement, and additional belt guiding means for movably supportto pass over both said surfaces to support and direct a tape which passes about said surfaces superposed upon the belt to move in three or more different plane paths of movement, and additional belt guiding means for movably supporting and directing a portion of the belt remote from the first named guide member and the tape so that only a portion of the belt in engagement with the first mentioned guide member will be maintained in engagement with the tape, said additional Ameans including a member having belt 40 guiding surfaces arranged at an angle to each other.

AUGUST D. EITZEN. 

